2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Other Diseases Of Intestines And Peritoneum 560-569 > Functional Digestive Disorders Not Elsewhere Classified 564.* > 2006 ICD-9-CM Diagnosis 564.00 Unspecified constipation View the most recent version of ICD-9-CM 564.00 Constipation; irregular and infrequent or difficult evacuation of the bowels. Other forms of abnormal feces or difficult passage of feces. Infrequent or difficult evacuation of FECES. These symptoms are associated with a variety of causes, including low DIETARY FIBER intake, emotional or nervous disturbances, systemic and structural disorders, drug-induced aggravation, and infections. 564.00 is a specific code that can be used to specify a diagnosis 564.00 contains 6 index entries View the ICD-9-CM Volume 1 564.* hierarchy  Index entries containing 564.00: Constipation 564.00 atonic 564.09 drug induced correct substance properly administered 564.09 overdose or wrong substance given or taken 977.9 specified drug - see Table of Drugs and Chemicals neurogenic 564.09 other specified NEC 564.09 outlet dysfunction 564.02 psychogenic 306.4 simple 564.00 slow transit 564.01 spastic 564.09 Costiveness (see also Constipation) 564.00 Dyschezia (see also Constipation) 564.00 Obstipation (see also Constipation) 564.00 psychogenic 306.4 Retention, retained fecal (see also Constipation) 564.00